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Finding the Fourth Proportional to 67,014.71, 92,482.47 and 38,720.39

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Solution

The fourth proportional to 67,014.71, 92,482.47 and 38,720.39 is: 53,435.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,014.71 : 92,482.47 = 38,720.39 : x
  2. Step 2: Convert to fraction form
    67,014.71/92,482.47 = 38,720.39/x
  3. Step 3: Cross multiply
    67,014.71x = 92,482.47 × 38,720.39
  4. Step 4: Simplify right side
    67,014.71x = 3,580,957,112.96
  5. Step 5: Solve for x
    x = 3,580,957,112.96/67,014.71
  6. Step 6: Final answer
    x = 53,435.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.